CN1572415A - CVD coated cutting tool insert - Google Patents

CVD coated cutting tool insert Download PDF

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Publication number
CN1572415A
CN1572415A CNA2004100593056A CN200410059305A CN1572415A CN 1572415 A CN1572415 A CN 1572415A CN A2004100593056 A CNA2004100593056 A CN A2004100593056A CN 200410059305 A CN200410059305 A CN 200410059305A CN 1572415 A CN1572415 A CN 1572415A
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layer
tic
preferred
coating
thickness
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CNA2004100593056A
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Chinese (zh)
Inventor
安德烈亚斯·拉松
阿内特·苏林
莱纳·彼得松
萨卡里·鲁皮
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Seco Tools AB
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Seco Tools AB
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Publication of CN1572415A publication Critical patent/CN1572415A/en
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

The present invention relates to a coated cemented carbide insert (cutting tool), particularly useful for milling of stainless steels and super alloys but also milling of steels in toughness demanding applications. The cutting tool insert is characterised by a cemented carbide body comprising WC, NbC and TaC, a W-alloyed Co binder phase, and a coating comprising an innermost layer of TiCxNyOz with equiaxed grains, a layer of TiCxNyOz with columnar grains and a layer of alpha-Al2O3.

Description

The CVD coated cutting tool insert
Technical field
The present invention relates to a kind of coated cemented carbide insert (cutter), be particularly useful for milling stainless steel and superalloy, but also be used for steel being carried out milling in the purposes that requires toughness.
Background technology
During various materials being carried out milling, think that blade is according to different abrasion mechanism wearing and tearing with cutting tool coated with hard alloy.Seldom run into the wear type of a single state, for example chemical abrasion, fretting wear and adhesion wear run into complicated abrasive manner often.Determining by purposes in the highest flight of any abrasion mechanism, and depend on the performance of workpiece and the cutting parameter that is applied and the performance of cutter material.Under high cutting speed, the heat that produces in cutting zone is quite big, and plastic deformation can appear in blade, and this produces higher wearing and tearing by other mechanism conversely.Cutter life often also is subjected to the restriction of being peeled off by the sword that the so-called reeds that forms perpendicular to blade causes.These crackles are that the heat and the mechanical load of the variation that is subjected in the interrupted cut process by blade causes.This carries out in the machined more obvious at the use cooling agent, strengthened thermal change in this processing.
Usually compare with other steel, many stainless steels especially its material behavior of superalloy are seen least desirable from the machinable aspect.The low heat conductivity of these materials causes producing high temperature in cutter and the workpiece contact area.Reduce the cutter temperature with cooling agent and can bring very large thermal change, and produce high inner cutter load.These workpiece materials are often easy deformation sclerosis also.The strain hardening meeting of workpiece in cutting zone causes high cutting force, perhaps even in hardened layer cuts, and the two all can cause tool wear to be accelerated.In addition, most of stainless steels and superalloy demonstrate good tack for many coating materials, and owing to the adhesion wear that again cuts the blade that causes of smear metal with peel off rapidly quite obvious.Therefore obviously be used for to have the cutter material characteristic outside required those characteristics that have usually to the cutting tool coated with hard alloy that stainless steel and superalloy carry out milling.
Usually, can take measures to improve cutting ability for specific wear type.But often these measures have negative effect to other polishing machine, therefore must carefully optimize the cutting tool composite material that many performances are designed success.The straightforward procedure that improves the common needed toughness of milling cutter is to improve the bonding agent phase content.But this also will reduce wearability immediately, and anti-plastic deformation ability.Add cubic carbide for example TiC, TaC and NbC be the mode that another kind is used for affecting cutting performance, and big addition can obtain relative good toughness properties with the combination of highly adhesive phase content.But, thisly be added on that reeds forms and blade peels off and has negative effect on the tendency.
Owing to obviously be difficult to improve simultaneously all cutting performances, so in the above-mentioned wear type one or more commercially available carbide alloy kind is optimized.Therefore, they also have been optimized for specific application.
US6,062,776 has disclosed a kind of low and medium alloy steel and stainless coated cutting insert that in labile state milling has for example casting surface of initial surface, forges epidermis, hot rolling or cold rolling epidermis or pre-machining surface that be particularly useful for.This blade is characterized in that, comprises: a kind of WC-Co carbide alloy, and it has the low content cubic carbide, and W-the alloying adhesive is mutually with quite low; And a kind of coating, it comprises the TiC with columnar grain xN yO zInnermost layer, TiN top layer and κ-Al 2O 3Internal layer.
US6,177,178 disclosed a kind of be particularly useful under moistening or drying condition grinding have or do not have the initial surface zone in and the coating milling cutting insert of low-alloy steel.This blade is characterized in that, comprises: a kind of WC-Co carbide alloy, and it has the low content cubic carbide and high W-the alloying adhesive is mutually; And a kind of coating, it comprises the TiC with columnar grain xN yO zInnermost layer, one κ-Al 2O 3Internal layer and a preferred TiN top layer.
US6,250,855 have disclosed and a kind of stainless steel with different component and microstructure have been wet or the coating milling cutting insert of dried milling.Comprise the WC-Co that does not add any cubic carbide, low W alloy Co adhesive and include based on the carbide chip of coating WC-Co by component (Ti with certain content xAl 1-x) hard wear-resistant coating of the sandwich construction that constitutes of N sublayer.
EP1103635 provides a kind of and is particularly useful for low and medium alloy steel and stainless steel wets and dried milling and the cutter knife that is used for stainless steel is carried out turning.This cutter is made of the cobalt hard alloy substrate that has the multiple layer refractory coating on it.Its cobalt content of this substrate is 9.0-10.9wt%, and contains the TaC/NbC of 1.0-2.0wt%.This coating comprises a MTCVDTiC xN yO zThe layer and by κ-Al 2O 3And TiC xN yO zThe laminated coating that layer consists of.
Have been found that now and to realize improving cutting ability by many different characteristics of this cutter of combination.This cutting tip is owing to have excellent performance for milling stainless steel and superalloy, and for for the steel in the operation that needs toughness, having excellent properties.Under these machining conditions, cutting tool according to the present invention has improved performance aspect above-mentioned many wear types.
Summary of the invention
The cutting tool according to the present invention blade comprises the carbide alloy substrate that its cubic carbide amount is relatively low, arrives high W-alloying adhesive phase and tiny of medium WC grain size during it has.This substrate is provided with a wear-resistant coating, and this coating comprises the TiC that is made of equi-axed crystal xN yO zLayer, the TiC that is consisted of by columnar grain xN yO zLayer and one deck α-Al at least 2O 3Layer.
Brief description of drawings
Fig. 1 demonstrates according to coated cemented carbide insert of the present invention, wherein with 2500 times of multiplication factors:
1. cemented carbide body
2. innermost TiC xN yO zLayer
3. the TiC that has columnar grain xN yO zLayer
4. α-Al 2O 3Layer
Detailed description of preferred embodiments
Coated cutting tool insert according to the present invention is provided with a cemented carbide body, and its composition is: 11.3-12.7wt%Co, be preferably 11.5-12.5wt%Co, and most preferably be 11.8-12.4wt%Co; Total content is 0.5-2.5wt%, be preferably 0.7-1.9wt%, most preferably be the cubic carbide of metal Ti, Nb and the Ta of 1.0-1.8wt%; And measurement WC.Ti, Ta and/or Nb also can be replaced by other carbide that is selected from the element of the IVb of family, Vb in the periodic table of elements or VIb.The content of Ti preferably with the corresponding degree of technology impurity on.In preferred embodiments, the weight ratio between Ta and Nb is 1.0-12.0, is preferably 1.5-11.4, most preferably is 3.0-10.5.
Cobalt binder and tungsten moderate are to the height alloying.Can be expressed as S-value=σ/16.1 at the W content of adhesive in mutually, wherein σ is the magnetic moment of the adhesive phase measured, with μ Tm 3/ kg represents.This S value depends at the W content of adhesive in mutually, and increases along with reducing of W content.Therefore, for pure cobalt or for the adhesive in the saturated carbide alloy of carbon, S=1, for its W content corresponding to the adhesive of the boundary line that forms the η phase mutually for, S=0.78.
Have been found that now according to the present invention its S value of cemented carbide body for 0.81-0.95, be preferably 0.82-0.94, most preferably be in the 0.85-0.92 situation, can realize the improvement of cutting ability.
In addition, the tungsten carbide average intercepted length mutually of measuring in polishing and the exemplary cross section of polishing is 0.3-0.8 μ m, is preferably 0.4-0.8 μ m.This intercepted length is by being to carry out graphical analysis on the microphoto of 10000x to measure in multiplication factor, and is calculated to be the mean value of about 1000 intercepted lengths.
According to preferred embodiment, this coating comprises:
One TiC xN yO zGround floor (innermost layer), 0.7≤x+y+z≤1 wherein, preferred z＜0.5, more preferably y＞x and z＜0.2, y＞0.7 most preferably, and have equi-axed crystal, and its gross thickness＜1 μ m, preferred＞0.1 μ m.
One TiC xN yO zLayer, 0.7≤x+y+z≤1 wherein, preferred z＜0.2, x＞0.3 and y＞0.2, x＞0.4 most preferably, its thickness is 0.5-5 μ m, is preferably 1-4 μ m, most preferably is 1.5-3 μ m, has columnar grain.
An Al who is consisted of mutually by α 2O 3Layer.This Al 2O 3Its thickness of layer is 0.2-5 μ m, is preferably 0.5-4 μ m, and most preferably is 1-3 μ m.
In a further preferred embodiment, after applying, adopting wet blasting or brushing operation that aforesaid cutter knife is processed, thereby can improve the surface quality on the rake face of coated cutting tool.
The invention still further relates to a kind of method of making coated cutting tool, its composition of this cutter is: 11.3-12.7wt%Co, be preferably 11.5-12.5wt%Co, and most preferably be 11.8-12.4wt%Co; Total content is 0.5-2.5wt%, be preferably 0.7-1.9wt%, most preferably be the cubic carbide of metal Ti, Nb and the Ta of 1.0-1.8wt%; And measurement WC.Ti, Ta and/or Nb also can be replaced by other carbide that is selected from the element of the IVb of family, Vb in the periodic table of elements or VIb.The content of Ti preferably with the corresponding degree of technology impurity on.In preferred embodiments, the weight ratio between Ta and Nb is 1.0-12.0, is preferably 1.5-11.4, most preferably is 3.0-10.5.
Desired average intercepted length depends on crystallite dimension and grinding and the sintering condition of initial powder, and must be definite by testing.Desired S value depends on initial powder and sintering condition, and also must be definite by testing.
In 700-950 ℃ temperature range, adopt acetonitrile to utilize the MTCVD technology with TiC as carbon and nitrogenous source xN yO zBe deposited on the carbide alloy alloy in order to form this layer, 0.7≤x+y+z≤1 wherein, preferred z＜0.2, x＞0.3 and y＞0.2, x＞0.4 most preferably, and have the columnar grain form.
Innermost TiC xN yO zLayer and alumina layer are according to known deposition techniques.
The invention still further relates to use according to cutter knife recited above come with 30-500m/ minute, be preferably 50-400m/ minute cutting speed milling stainless steel and superalloy, and be 0.04-0.20mm according to cutting speed and its average depth of cut numerical value of blade geometry.
Embodiment 1:
Kind A: thus by conventional abrasive flour, compacting green compact and producing according to carbide alloy substrate of the present invention at 1430 ℃ of following sintering subsequently, its component be 12wt%Co, 1.3wt%TaC, 0.2wt%NbC and measurement WC and have corresponding to the S value be 0.90 and adhesive W alloyization mutually.After sintering, this microstructure observed and show that the average intercepted length of tungsten carbide phase is 0.59 μ m.This substrate scribbles according to the present invention: the thick TiC of 0.2 μ m xN yO zLayer, wherein z＜0.1 and y＞0.6 has equi-axed crystal; 2.5 the columnar grain TiC that μ m is thick xN yO zLayer, it is to adopt acetonitrile to form 835-850 ℃ of deposit as carbon nitrogen source, thus the carbon-nitrogen ratio that forms is about x/y=1.5, and z＜0.1; And α-Al of 1.2 μ m 2O 3Layer, it is to form in about 1000 ℃ of deposit.With XRD to Al 2O 3Layer the analysis showed that without any κ-Al 2O 3Vestige.
Kind B: preparing the substrate identical with the substrate (according to the present invention) of kind A with manufacture method of its chemical composition with thick WC powder, is 0.7 μ m thereby cause the average intercepted length of its WC phase.Method according to kind A of the present invention applies substrate.
Kind C: by conventional abrasive flour, compacting green compact and under 1430 ℃, carry out SINTERING PRODUCTION subsequently and go out this substrate, its component is 12wt%Co, 0.52wt%Cr and measurement WC, its W alloy adhesive corresponds to 0.87 S value, and the average intercepted length of the WC in sintered body is 0.58 μ m, and this substrate is combined with the coating according to kind A (according to the present invention).
During the face milling that is applied with fluid coolant is therein used to testing according to the blade of kind A, kind B and kind C.
Operation Face milling
Tool diameter 80mm
Workpiece Bar, 600mm * 75mm
Material SS2333
Blade type SEKN1203
Cutting speed 300m/ minute
The amount of feeding 0.25mm/ tooth
The number of teeth 6
Cutting depth 3.5mm
Cutting width 35mm
Cooling agent Have
The result Cutter life (minute)
Kind A (according to kind of the present invention) 10
Kind B (according to kind of the present invention) 9
Kind C (according to coating of the present invention) 6
Cutter life is subjected to the restriction that the blade relevant with reeds peels off.This test shows that it is subjected to the influence of WC grain size less, and for example TaC and NbC are added with Cr its poor-performing of material as grain growth inhibitor to replace cubic carbide.
Embodiment 2:
The substrate of kind D: kind A (according to the present invention) scribbles the thick TiC with equi-axed crystal of 0.3 μ m xN yO zLayer, the thick columnar grain TiC of 2.5 μ m that goes out 835-850 ℃ of deposit xN yO zLayer and the thick κ-Al of 1.3 μ m that goes out in about 1000 ℃ of deposit 2O 3Layer.This coating is carried out XRD analysis to be shown and not to have α-Al 2O 3The Al of phase 2O 3
In Inconel 718 parts being carried out the face milling operation, the blade of kind A and kind D is tested.
Operation Face milling
Tool diameter 63mm
Workpiece Ingot casting
Material Inconel 718
Blade type OFMT0504
Cutting speed 40m/ minute
The amount of feeding 0.12mm/ tooth
The number of teeth 6
Cutting depth 2mm
Cutting width 38mm
Cooling agent Emulsion
Cutting time 12 minutes
The result Flank wear
Kind A (according to kind of the present invention) 0.15mm
Kind D (according to substrate of the present invention) 0.20mm
Before arriving maximum cutter life, stop test, and study the wearing and tearing of these blades.The blade of kind A shows lower average flank wear, and the blade of kind D takes second place, and it is more not obvious on the blade of kind A that blade peels off tendentiousness in addition.That is, the blade of kind A demonstrates better wear resistance and toughness properties when comparing with the blade of kind D.
Embodiment 3:
Kind E: the substrate of kind A (according to the present invention) is coated with the coating structure of with good grounds kind A, and increases by 0.4 thick outside rich nitrogen TiC xN yO zLayer.
Operation Square shoulder milling
Workpiece Bar
Material SS2333
Blade type APKT1604
Cutting speed 250m/ minute
Tool diameter 25mm
The amount of feeding 0.28mm/ tooth
The number of teeth 2
Cutting depth 2.5mm
Cutting width 3-12mm
Cooling agent Do not have
The result Cutter life (minute)
Kind A (according to kind of the present invention) 17
Kind E] (according to kind of the present invention) 14
Cutter life is subjected to the restriction that flank wear and blade peel off.When the blade that uses in kind A, the possibility that smear metal is attached to cutting tip is than much lower when the blade that uses in kind E.The cutter life of kind E is poorer to be to cause owing to the more obvious blade that occurs because of cutting again of adhesion wear and smear metal peels off.
Embodiment 4:
Kind F: from competitor's commercially available carbide cutting blade, its component is 10.5wt%Co, 0.43wt%Cr and measurement WC.The W alloy adhesive corresponds to 0.91 S value, and the average intercepted length of WC is 0.6 μ m.This blade scribbles the thick coating of 4.9 μ m, and this coating has TiN and TiAl alternately 1-xThe N layer.
Operation Face milling
Tool diameter 80mm
Workpiece Bar, 300mm * 80mm
Material SS2343
Blade type SEET13
Cutting speed 275m/ minute
The amount of feeding 0.17mm/ tooth
The number of teeth 1
Cutting depth 4mm
Cutting width 50mm
Cooling agent Do not have
Cutting time 13 minutes
The result The maximum side wearing and tearing
Kind A (according to kind of the present invention) 0.15
Kind F (prior art) 0.45
The wearing and tearing of when arriving maximum cutter life for the poorest kind, measuring these blades.

Claims (3)

1. cutter knife, it comprises cemented carbide body and coating, be particularly useful for stainless steel and superalloy carries out milling and in the purposes that requires toughness steel being carried out milling, it is characterized in that, its composition of described body is: 11.3-12.7wt%Co, be preferably 11.5-12.5wt%Co, most preferably be 11.8-12.4wt%Co; Total content is 0.5-2.5wt%, be preferably 0.7-1.9wt%, most preferably be the cubic carbide of metal Ti, Nb and the Ta of 1.0-1.8wt%; And weigh WC, and its average intercepted length of described WC grain is 0.3-0.8 μ m, is preferably 0.4-0.8 μ m, adhesive corresponds at 0.81-0.95, is preferably S value and W alloyization in the 0.82-0.94 scope, and described coating comprises:
TiC xN yO zGround floor (innermost layer), 0.7≤x+y+z≤1 wherein, preferred z＜0.5, more preferably y＞x and z＜0.2, y＞0.7 most preferably, and have equi-axed crystal, and its gross thickness＜1 μ m, preferred＞0.1 μ m;
TiC xN yO zLayer, 0.7≤x+y+z≤1 wherein, preferred z＜0.2, x＞0.3 and y＞0.2, x＞0.4 most preferably, its thickness is 0.5-5 μ m, is preferably 1-4 μ m, most preferably is 1.5-3 μ m, has columnar grain; And
The Al that is consisted of mutually by α 2O 3Layer, this Al 2O 3Its thickness of layer is 0.2-5 μ m, is preferably 0.5-4 μ m, and most preferably is 1-3 μ m.
2. method of making cutter knife, this cutter knife comprises cemented carbide body and coating, its composition is: 11.3-12.7wt%Co, be preferably 11.5-12.5wt%Co, most preferably be 11.8-12.4wt%Co; Total content is 0.5-2.5wt%, be preferably 0.7-1.9wt%, most preferably be the cubic carbide of metal Ti, Nb and the Ta of 1.0-1.8wt%; And weigh WC, and its average intercepted length of described WC grain is 0.3-0.8 μ m, is preferably 0.4-0.8 μ m, adhesive corresponds at 0.81-0.95, is preferably S value and W alloyization in the 0.82-0.94 scope, and described coating comprises:
TiC xN yO zGround floor (innermost layer), 0.7≤x+y+z≤1 wherein, preferred z＜0.5, more preferably y＞x and z＜0.2, y＞0.7 most preferably, and have equi-axed crystal, and its gross thickness＜1 μ m, preferred＞0.1 μ m;
TiC xN yO zLayer, 0.7≤x+y+z≤1 wherein, preferred z＜0.2, x＞0.3 and y＞0.2, x＞0.4 most preferably, its thickness is 0.5-5 μ m, is preferably 1-4 μ m, most preferably is 1.5-3 μ m, has columnar grain; And
The Al that is consisted of mutually by α 2O 3Layer, this Al 2O 3Its thickness of layer is 0.2-5 μ m, is preferably 0.5-4 μ m, and most preferably is 1-3 μ m.
According to the cutter knife of claim 1-2 with 30-500m/ minute, be preferably 50-400m/ minute cutting speed milling stainless steel and the purposes in the superalloy, be 0.04-0.25mm wherein according to cutting speed and its average depth of cut numerical value of blade geometry.
CNA2004100593056A 2003-06-16 2004-06-16 CVD coated cutting tool insert Pending CN1572415A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE03017423 2003-06-16
SE0301742A SE526599C2 (en) 2003-06-16 2003-06-16 CVD coated carbide inserts

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CN100418679C (en) * 2005-06-22 2008-09-17 山高刀具公司 Composite coatings for finishing of hardened steels
CN101312927A (en) * 2005-11-17 2008-11-26 倍锐特有限责任公司 Laminated hard alloy piece
CN101018879B (en) * 2005-06-27 2011-04-06 山特维克知识产权股份有限公司 Coated cutting cutter comprising carbide substrate and coating and its manufacture method
CN101402147B (en) * 2007-09-13 2012-03-21 山高刀具公司 Coated cutting insert for milling applications
CN101342602B (en) * 2007-07-13 2013-03-13 山高刀具公司 Coated cutting tool
CN103537720A (en) * 2012-07-17 2014-01-29 三菱综合材料株式会社 Surface-wrapped cutting tool

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SE529856C2 (en) * 2005-12-16 2007-12-11 Sandvik Intellectual Property Coated cemented carbide inserts, ways of making this and its use for milling
SE532023C2 (en) * 2007-02-01 2009-09-29 Seco Tools Ab Textured hardened alpha-alumina coated cutting for metalworking
US8080323B2 (en) * 2007-06-28 2011-12-20 Kennametal Inc. Cutting insert with a wear-resistant coating scheme exhibiting wear indication and method of making the same
US20090004449A1 (en) * 2007-06-28 2009-01-01 Zhigang Ban Cutting insert with a wear-resistant coating scheme exhibiting wear indication and method of making the same
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SE9504304D0 (en) * 1995-11-30 1995-11-30 Sandvik Ab Coated milling insert
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US6251508B1 (en) * 1998-12-09 2001-06-26 Seco Tools Ab Grade for cast iron
SE519005C2 (en) * 1999-03-26 2002-12-17 Sandvik Ab Coated cemented carbide inserts
JP2001087907A (en) * 1999-07-22 2001-04-03 Mitsubishi Materials Corp Machining tool of cemented carbide based on surface- covered tungsten carbide with its hard covering layer exhibiting excellent chipping resistance in intermittent heavy duty machining
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US6733874B2 (en) * 2001-08-31 2004-05-11 Mitsubishi Materials Corporation Surface-coated carbide alloy cutting tool

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Publication number Priority date Publication date Assignee Title
CN100418679C (en) * 2005-06-22 2008-09-17 山高刀具公司 Composite coatings for finishing of hardened steels
CN101018879B (en) * 2005-06-27 2011-04-06 山特维克知识产权股份有限公司 Coated cutting cutter comprising carbide substrate and coating and its manufacture method
CN101312927A (en) * 2005-11-17 2008-11-26 倍锐特有限责任公司 Laminated hard alloy piece
CN101342602B (en) * 2007-07-13 2013-03-13 山高刀具公司 Coated cutting tool
CN101402147B (en) * 2007-09-13 2012-03-21 山高刀具公司 Coated cutting insert for milling applications
CN103537720A (en) * 2012-07-17 2014-01-29 三菱综合材料株式会社 Surface-wrapped cutting tool

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SE0301742L (en) 2004-12-17
SE526599C2 (en) 2005-10-18
EP1493845A1 (en) 2005-01-05
EP1493845B1 (en) 2016-11-16
KR20040111066A (en) 2004-12-31
US7150772B2 (en) 2006-12-19
SE0301742D0 (en) 2003-06-16
KR101133476B1 (en) 2012-04-10
US20050037203A1 (en) 2005-02-17

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